Poor William. If it helps any, it's you speaking up that actually works to get her to focus a little more on not going completely apeshit crazy with fear.
It was the voice that did it. There were a lot of subtle differences between William and her husband, but that voice and that tone was virtually identical. It was someone else saying it, but it still managed to penetrate the haze of fear.
"They always take care of it. Them, or Envy, or Hohenheim. And Dad took care of the one from my own," Anna said softly. "He can handle taking care of a Dante, he doesn't like it, but he can do it. I should be able to do this, shouldn't I? I should be out of that house by now."